ISIS could be close to collapse, according to reports which claim the death cult has only 34 bases left as targets continue to be blasted by Russian bombers.

Mohammad Ali al-Hakim of Iraq's al-Nakhil news agency said the recent air strikes have put the vile organisation in a very vulnerable position.

He said: "At present, [ISIS] only has 34 bases in Mosul, Raqqa, etc. which were many more in number."

He added: "The end of the [ISIS] which has been borne by the westerners is close."

French, Russian and American planes have blasted hundreds of ISIS targets in recent days in revenge for the attacks on Paris earlier this month which left 130 dead, and the Russian tourist jet downed on October 31, killing all 224 people on board.

Revenge: The strikes come after the Paris attacks

600 extremists were destroyed in a single air strike on Friday, according to Russian media reports.

A total of 18 Russian cruise missiles were said to have rained down on fanatics in one of the largest strikes against ISIS in Syria.

A total of 500 oil tankers, smuggling oil from Syria to Iraq, were also destroyed according to the Ahlul Bayt News Agency .

Reports said on Wednesday and Thursday that the top ISIS leaders and commanders had been witnessed escaping from the Syrian city of Raqqa after sustaining heavy casualties in the Russian air strikes and long-range cruise missile attacks from its Mediterranean fleet.

Since last month, U.S. warplanes have been striking at Islamic State's oil infrastructure in Syria in a stepped-up campaign of economic warfare that the United States estimates has cut the group's black-market earnings from oil by about a third.

Warning: Reports say many ISIS bases have been struck

China has also joined the war against ISIS after it claimed to have killed Beijing man Fan Jinghui, 50, alongside Norwegian national Ole Johan Grimsgaard-Ofstad, 48, who were feared to have been taken hostage in September.

Chinese President Xi Jinping: "China will strengthen cooperation with the international community, resolutely crack down on violent terrorist operations that devastate innocent lives and safeguard world peace and security."

He also called on the relevant departments to boost security work "outside China's borders".